Microswitches

Microswitches are mechanically operated electrical switches designed with an actuator and terminals called common, normally open and normally closed. A micro switch is also known as a snap action switch, they operate by using a spring loaded lever to open and close a set of internal contacts inside the unit.

How does a microswitch work?

Power is typically attached to the common terminal, this leads into the switch and energises the spring and because the spring is touching the normally close pin it sends power out here, this is called a resting state. Once the arm is moved the power is then transferred to the normally open pin.

Where would you find them?

Microswitches are differentiated by their electrical characteristics. These are small devices and generally only designed to carry low current and voltages. These switches are very commonly employed as safety devices, as they are reliable, inexpensive and can open up a circuit when needed, preventing a machine from being turned on or a door from closing when someone is in the way.

Actuator types

There are various types available but the operating principles are the same, switches are actuated by a plunger, a button, a roller or a lever.

What is their operating life?

Microswitches operating life is generally very high, being measured in millions of cycles, in most cases. Consumer products generally have lighter-duty microswitches than industrial products, but the low cost of these parts makes it easy enough to upgrade to higher mechanical life expectancies when required or when it's simply beneficial to do so.

Standards

We offer a range of high quality sealed miniature and sub-miniature microswitches that meet industry standards and RoHS compliance.

What type of applications need microswitches?

Microswitches are used in consumer devices and industrial equipment. Common application for these devices are in door interlocks, microwave ovens or where a door has to be shut before the power to the device will turn on. Microswitches are also used in levelling devices, such as those used on vending machines. In an elevator, these devices are used in the door as a safety switch.

Microswitches can be designed to be very sensitive. Such designs can be used in very precise equipment, such as that which measures the flow of air or other gasses through a system. These devices are used extensively in industry, often in control circuits.

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Description Price Actuator Type Terminal Type Contact Current Rating Contact Configuration IP Rating Operating Force Minimum Operating Temperature Maximum Operating Temperature Switch Housing Contact Material Case Material Mechanical Life Release Force Operating Temperature Range
RS Stock No. 173-9302
Mfr. Part No.V3SYR-UL
MYR120.599
Each (In a Bag of 50)
units
Short Roller Lever Pre-wired 5 A @ 250 V ac SP-NO/NC IP67 3.9 N -40°C +85°C - Silver Glass Fibre Reinforced Nylon 10^6Operations 0.4N -40 → +85°C
RS Stock No. 318-014
Mfr. Part No.V3SYR-UL
MYR129.50
Each
units
Short Roller Lever Pre-wired 5 A @ 250 V ac SP-NO/NC IP67 3.9 N -40°C +85°C - Silver Glass Fibre Reinforced Nylon 10^6Operations 0.4N -40 → +85°C
RS Stock No. 456-4637
Mfr. Part No.V4LS
MYR49.18
Each
units
Plunger Pre-wired 5 A @ 250 V ac SP-NO/NC IP6K7 2.5 N -40°C +85°C - Fine Silver Glass Fibre Reinforced PA 10^5Operations 0.5N -40 → +85°C
RS Stock No. 173-9373
Mfr. Part No.44710
MYR47.76
Each (In a Bag of 20)
units
Plunger Pre-wired 5 A @ 250 V ac SP-NO/NC IP6K7 2.5 N -40°C +85°C - Fine Silver Glass Fibre Reinforced PA 10^5Operations 0.5N -40 → +85°C
RS Stock No. 157-1036
Mfr. Part No.V4NS
MYR43.82
Each
units
Plunger Pre-wired 5 A @ 250 V ac SP-NO/NC IP67 2.5 N -10°C +85°C - Fine Silver Glass Fibre Reinforced Nylon 3 x 10^6Operations 0.3N -10 → +85°C
RS Stock No. 472-8263
Mfr. Part No.XGG2-88-S21Z1
MYR37.08
Each
units
Roller Lever Tab 15 A @ 250 V ac - - 1.54 N - - - Gold; Silver - - 0.18N -
RS Stock No. 173-9359
Mfr. Part No.43780
MYR319.471
Each (In a Bag of 20)
units
Lever Pre-wired 10 A @ 250 V ac SP-NO/NC IP67 3 N -10°C +85°C - Silver Zinc 10^6Operations 0.6N -10 → +85°C
RS Stock No. 341-6509
Mfr. Part No.43780
MYR351.39
Each
units
Lever Pre-wired 10 A @ 250 V ac SP-NO/NC IP67 3 N -10°C +85°C - Silver Zinc 10^6Operations 0.6N -10 → +85°C
RS Stock No. 173-9362
Mfr. Part No.V3SYR1-UL
MYR95.556
Each (In a Bag of 50)
units
Roller Lever Pre-wired 5 A @ 250 V ac SP-NO/NC IP67 2.3 N -40°C +85°C - Silver Glass Fibre Reinforced Nylon 10^6Operations 0.42N -40 → +85°C
RS Stock No. 325-7805
Mfr. Part No.V3SYR1-UL
MYR85.41
Each
units
Roller Lever Pre-wired 5 A @ 250 V ac SP-NO/NC IP67 2.3 N -40°C +85°C - Silver Glass Fibre Reinforced Nylon 10^6Operations 0.42N -40 → +85°C
RS Stock No. 472-8207
Mfr. Part No.XGG2-88Z1
MYR18.58
Each
units
Button Tab 16 A @ 250 V ac SPDT-NO/NC IP40 3.2 N -40°C +85°C - Fine Silver; Silver Nickel Melamine Formaldehyd Thermosetting 50000000Operations 0.4N -40 → +85°C
RS Stock No. 472-8257
Mfr. Part No.XGG2-88-S20Z1
MYR35.25
Each
units
Roller Lever Tab 16 A @ 250 V ac SPDT-NO/NC IP40 3.2 N -40°C +85°C - Fine Silver; Silver Nickel Melamine Formaldehyd Thermosetting 50000000Operations 0.37N -40 → +85°C
RS Stock No. 472-8235
Mfr. Part No.XGG2-88-J26Z1
MYR19.33
Each
units
Lever Tab 16 A @ 250 V ac SPDT-NO/NC IP40 0.91 N -40°C +85°C - Fine Silver; Silver Nickel Melamine Formaldehyd Thermosetting 50000000Operations - -40 → +85°C
RS Stock No. 157-1008
Mfr. Part No.V4NT7
MYR16.26
Each
units
Plunger Solder - SP-NO/NC IP40 1.4 N -40°C +85°C - Silver Glass Fibre Reinforced Nylon 5 x 10^6Operations 0.28N -40 → +85°C
RS Stock No. 173-9397
Mfr. Part No.42394
MYR6.573
Each (In a Bag of 200)
units
Plunger Solder - SP-NO/NC IP40 1.4 N -40°C +85°C - Silver Glass Fibre Reinforced Nylon 5 x 10^6Operations 0.28N -40 → +85°C
RS Stock No. 173-9386
Mfr. Part No.XCG8-S1-Z1
MYR7.367
Each (In a Bag of 200)
units
Roller Lever PCB 6 A @ 250 V ac NO/NC IP40 0.7 N -40°C +85°C - Silver Phenolic Melamine 5 x 10^7Operations 0.09N -40 → +85°C
RS Stock No. 472-8077
Mfr. Part No.XCG3-S1-Z1
MYR23.14
Each
units
Roller Lever Solder 6 A @ 250 V ac SPDT-NO/NC IP40 0.7 N -40°C +85°C - Fine Silver Thermosetting Formaldehyd Melamine 50000000Operations 0.09N -40 → +85°C
RS Stock No. 157-1014
Mfr. Part No.V4NT9
MYR25.68
Each
units
Plunger Solder 5 A @ 250 V ac SPDT IP67 0.5 N -40°C +85°C - - - 3 x 10^6Operations 0.1N -40 → +85°C
RS Stock No. 472-8112
Mfr. Part No.XCG5-S1-Z1
MYR25.61
Each
units
Roller Lever Tab 5 A @ 250 V ac - - 0.69 N - - - Gold; Silver - - 0.09N -
RS Stock No. 321-600
Mfr. Part No.42680
MYR28.62
Each
units
Plunger Tab 10 A @ 250 V ac SPST-NC IP40 4.5 N -40°C +85°C - Silver (Stationary); Silver Nickel (Movable) Glass Fibre Reinforced Nylon 10^6Operations 4.8N -40 → +85°C